Santa Rosa County Sheriff's Office officials recovered what authorities called a "substantial" amount of narcotics while searching the vehicle of a Fort Walton Beach woman.(Photo: Courtesy of Santa Rosa County Sheriff's Office)

A traffic stop by the Santa Rosa County sheriff led to the arrest of a Fort Walton Beach woman who had a "substantial" amount of narcotics in her purse, according to authorities.

Sheriff Bob Johnson was working an evening patrol shift at about 9 p.m. Friday when he observed a vehicle — a purple Chevrolet truck with an Arkansas tag — with several violations traveling east on U.S. 98 in Navarre.

He stopped the truck in his unmarked cruiser at the intersection of U.S. 98 and Fox Den Drive, according to a news release from the SRSO.

The driver was identified via her passport as Sunsiarae Swatzel, 47.

Sunsiarae Swatzel(Photo: Courtesy of Santa Rosa County Jail)

Swatzel did not have proof of registration nor of insurance and had an obstructed tag and a broken tag light, according to her arrest report.

A K-9 unit responded to the scene, and a K-9 named Zeus alerted his handler that there could be drugs in the vehicle.

Deputies searched the vehicle, and, according to Swatzel's arrest report, they found the following in her purse:

four bags of methamphetamine,

four Xanax pills,

one Alprazolam,

0.8 grams of heroin,

5 grams of marijuana,

one syringe with unknown clear liquid and

a powder substance that may have been Fentanyl.

Swetzel was arrested and transported to the Santa Rosa County Jail, where her bond was set at $40,500.

Santa Rosa County Sheriff Bob Johnson was working an evening patrol shift Friday, March 2, 2018, when he arrested a woman who allegedly had a "substantial" amount of narcotics in her purse.(Photo: Courtesy of Santa Rosa County Sheriff's Office)

She faces charges for delivering or distributing meth, two counts of possession of a controlled substance without a prescription and marijuana possession.

She was also issued two traffic citations.

Sheriff Johnson regularly works evening shifts on the road, according to the SRSO.